Pool access stair



FIG. 1 is a front perspective view of a pool access stair embodying my new design;

FIG. 2 is a left side elevation thereof; the right side elevation being a mirror image;

FIG. 3 is a front elevation thereof;

FIG. 4 is a rear view thereof;

FIG. 5 is a top plan view thereof; and

FIG. 6 is a bottom plan view thereof. 

The ornamental design for a pool access stair, as shown and described. 